EP 2384569 A1 20111109 - METHOD AND APPARATUS FOR SIMPLIFIED EXPECTED SYMBOL VALUE COMPUTATION AND INTERFERENCE CANCELLATION IN COMMUNICATION SIGNAL PROCESSING
Title (en)
METHOD AND APPARATUS FOR SIMPLIFIED EXPECTED SYMBOL VALUE COMPUTATION AND INTERFERENCE CANCELLATION IN COMMUNICATION SIGNAL PROCESSING
Title (de)
VERFAHREN UND VORRICHTUNG FÜR VEREINFACHTE BERECHNUNG DES ERWARTETEN SYMBOLWERTS UND STÖRUNGSLÖSCHUNG BEI DER KOMMUNIKATIONSSIGNALVERARBEITUNG
Title (fr)
MÉTHODE ET APPAREIL DE CALCUL SIMPLIFIÉ DE VALEURS PRÉVUES DE SYMBOLES, ET ANNULATION DES INTERFÉRENCES DANS LE TRAITEMENT DE SIGNAUX DE COMMUNICATION
Publication
Application
Priority
- EP 2009063153 W 20091009
- US 25286008 A 20081016
Abstract (en)
[origin: WO2010043556A1] A computationally-simplified approach to expected symbol value determination is based on classifying soft bit information corresponding to symbols in a received communication signal as being reliable or unreliable, and computing expected symbol values for the symbols based on the classified soft bit information. Classification can be carried out by "quantizing" the soft bit information to coarsely indicate whether individual symbol bits are known with high or low probability. Using quantized soft bit information greatly simplifies expected symbol value calculation, yet the calculated values still reflect a scaling corresponding to the underlying reliability of the soft bit information. Where the expected symbol values are computed for interfering symbols in a composite signal that also includes desired signals, preserving the underlying reliability knowledge in this manner effectively scales the amount interference cancellation applied to the composite signal in dependence on the reliability to which the interfering signal values are known.
IPC 8 full level
H04B 1/707 (2011.01); H04L 25/03 (2006.01); H04L 25/06 (2006.01)
CPC (source: EP US)
H04B 1/71072 (2013.01 - EP US); H04L 25/0328 (2013.01 - EP US); H04L 25/03318 (2013.01 - EP US); H04L 25/067 (2013.01 - EP US); H04L 25/03292 (2013.01 - EP US)
Citation (search report)
See references of WO 2010043556A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2010043556 A1 20100422; DK 2384569 T3 20181203; EP 2384569 A1 20111109; EP 2384569 B1 20180905; JP 2012506182 A 20120308; JP 5576870 B2 20140820; PT 2384569 T 20181109; US 2010098194 A1 20100422; US 8315342 B2 20121120
DOCDB simple family (application)
EP 2009063153 W 20091009; DK 09783880 T 20091009; EP 09783880 A 20091009; JP 2011531451 A 20091009; PT 09783880 T 20091009; US 25286008 A 20081016